Made of nitrile rubber (NBR,Buna-N), excellent elasticity and waterproof sealing, deformation resistant, wear resistant, corrosion resistant, ozone resistant, high and low temperature resistant. working in temperature range from -40℃/-40℉ to 120℃/248℉. Package includes: 10PC Watch Crown Rubber Waterproof O-rings Thickness: 1.3mm, 1.5mm or 2.0mm
A collection of love and memories woven into the story of you.